Sash-center



C. D. TABOR.

SASH CENTER.

APPLICATION FILED mzc.9. 1914.,

L1 9,173. Patented Aug. 29,1916.

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C. D. 'TABOR.

SASH CENTER.

I APPLICATION FILED DEC.9, I914. 1 ,1 96.,1 73. Patented Aug. 29,1916.

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Specification of Letters Patent.

Patented Aug. 29, 1916..

Application filed December 9, 1914. Serial No. 87630 1.

To all whom it may concern Be it known that I, CLINTON D. Timon, a citizen of the United States, residing at New Dorp, in the county of Richmond and State of New York, have invented new and useful Improvements in Sash-Centers, of which the following is a specification.

This invention relates to a sash center or pivot fixture which is more particularly designed for pivotally mounting a window sash in a window frame so as to permit of swinging the sash into an open or closed position and also'enable the sash to be reliably held in a closed position or in a more or less open position.

It is the purpose of this invention to provide a fixture of this character in which the pivot bolt between the plates attached respectively to the fixed and movable members of the window is relieved from undue wear; to provide improved means for preventing leakage through the fixture adjacent to the pivot bolt when the sash is closed, and to simplify and improve the fixture in other respects so as to reduce its cost and increase the efficiency of the same.

In the accompanying drawings: Figure 1 is a side elevation of the fixture embodying one form of my invention applied to the frame and sash of a window and viewed from one side thereof. Fig. 2 is a similar view of these parts viewedfrom the opposite side. Fig. 3 is a vertical transverse section taken in line 33, Fig. 4.. Fig. 4 is a vertical longitudinal. section taken in line l--il,

Fig. 3. Figs. 5 and 6 are horizontal sections taken in lines 5-5 and 66, Fig. 4, respectively. Fig. 7 is a sectional perspective view of the sash and those parts of the fixture secured thereto. Fig. 8 is a similar view of the frame and those parts of the fixture scoured thereto. Fig. 9 is. a perspective view of the locking bar forming part of my improved fixture. Fig. 10 is a perspective view of the pivot or coupling bolt. Fig. 11 is a similar view of the spring, washer and screw nuts associated with the pivot or coupling bolt for yieldingly connecting the parts of the fixture applied to the sash and frame members of thewindow. Fig. 12 is a vertical longitudinal section taken in line 1212, Fig. 18 and showing a modified construction of my improved pivot fixture. Fig. 13 is a vertical transverse section taken in line 1313, Fig. 12. Figs. 14; and 15 are hori zontal sections in the correspondingly numbered lines in Fig. 12.

Similar characters of reference indicate corresponding parts throughout the several views.

1 represents one of the stiles or side bars of the frame or fixed member of the window and 2 one of the stiles or side bars of the sash or movable member of the window which is adapted to be pivotally connected with the fixed member of the windowby my improved sash center or pivot fixtures.

In its general organization the sash center shown in Figs. 1-11 and embodying my invention comprises a fixed attaching or sup porting plate 3 which may be secured to the face of the frame stile by means of screws 41, as shown or any other suitable means, and provided on its central part with an inwardly projecting hollow boss 5 which has a conical exterior or bearing surface 6. The face of this fixed attaching plate is also provided on opposite sides of its boss with vertical main or home locking grooves 7 and also with a plurality of auxiliary locking grooves 8, 9, one pair of which is preferably arranged horizontally and two other pairs being arranged at an angle of 415 degrees or inclined half way between the vertical and horizontal locking grooves. The main locking grooves are comparatively deep while each of the auxiliary locking grooves is comparatively shallow relatively to the main locking grooves for a purpose which will presently appear. At the upper and lower edges of the fixed attaching or supporting plate the same is provided with diagonally opposite stop lugs 10, 11, which are inclined and arranged in line, respectively, with two stop bars 12, 13 arranged on the adjacent part of the frame.

14: represents a movable supporting or attaching plate which may be secured to the face of the sash stile by means of a screw 15, as shown, or other suitable means. On opposite sides of the vertical line drawn centrally through the movable attaching or supporting plate the same is provided with two cheeks 31, 32, which project from the face of this plate and which have their opposing inner sides constructed to form a coupling groove comprising a central enlarged part 16 preferably of circular form and two vertical reduced parts 17, 17 extending upwardly and downwardly respectively from the enlarged circular central part of this groove. Extending rearwardly from the inner ends of the reduced parts 17 of the coupling groove are two reduced guide notches 18 which are formed in the movable attaching plate. On the diagonally opposite part of the upper and lower ends of the cheeks of the movable attaching plate the same are provided with inclined stop shoulders 19, 20. In the assembled position of the parts, the cheeks of the sash plate engage with the face of the frame plate, the corresponding stop bars of the sash and frame engage their longitudinal faces with each other while the upper and lower inclined stop lugs 10, 11 of the frame plate engage with the inclined upper and lower stop shoulders 19, 20 of the cheeks of the sash plate, this position of the parts being represented in Figs. 1, 2, 3, 4, 5 and 6.

Between the opposing faces of the fixed and movable attaching plates of the fixture is arranged a locking bar or dog having a hub 21 which is provided with a circular periphery arranged within the enlarged circular part of the groove between the cheeks of the sash plate and a conical bore or socket 22 which engages with the conical exterior of the boss on the frame plate, two vertical locking arms 23, 23 extending upwardly and downwardly, respectively, from the hub 21 and arranged in the reduced portions 17 of the groove between the cheeks and adapted to engage their outer or front faces with one or another pair of locking grooves in the face of the frame plate, and two guide lugs 24:, 24 arranged on the hub in rear of the locking arms and engaging with the guide notches 18 in the sash plate.

25 represents a coupling or pivot bolt which operates partly as a means for pivot-.

ally connecting the sash and frame plates and the locking bar and also as part of the means for yieldingly holding these parts in position. This bolt extends axially through corresponding openings formed in the conical boss of the frame plate. and the hub of the locking bar and bears with its head 26 against the back of the conical boss which latter is counter sunk or recessed to accommodate this head, as shown in Figs. 4 and 6. The threaded end of the pivot or coupling bolt projects into a recess 27 formed in the edge of the sash in line with the central opening of the sash plate and the hub of the looking bar and on the threaded part of this bolt are mounted two screw nuts 28, 28. A coil spring 29 surrounds the inner end of the coupling bolt and bears at one end against the adjacent screw nut 28 while its opposite end bears against the hub of the locking bar by means of an interposed washer 30, as shown in Figs. 4 and 6. The washer 30 is of sufliciently large diameter that the same overlaps the adjacent part of the inner side of the sash plate, as shown in Figs. 3 and 6, and thus forms a means for preventing detachment of the frame and sash plates from each other when the fixture is not mounted. When the sash is in its vertical position, or in alinement with the frame, the locking arms of the locking bar engage with the main or home grooves of the frame plate and are yieldingly held in this position by the pressure of the spring which operates to draw the frame plate and looking bar against each other. While the locking bar is thus engaging with the main grooves the faces of the locking arms do not engage with the bottom of these grooves, thereby permitting the conical bore of the hub to engage with the periphery of the conical boss, so that a tight joint is formed between these parts and wind is prevented from blowing through the fixture in this region while the sash is closed. The opposite front corners of the locking arms are beveled or rounded somewhat, as shown in Figs. 5 and 9 and the side walls or longitudinal edges of each of the main and auxiliary locking grooves of the frame plate are similarly beveled, inclined or rounded, so that upon applying suflicient pressure upon the sash to overcome the tension of the spring the locking arms will be forced out of the respective grooves in the frame plate with which they engage by reason of the cooperating wedging action of their inclined surfaces and thereby permitting the sash to be turned about the coupling or pivot bolt as an axis. When the sash has been turned sufiiciently to bring the locking arms in line with the next pair of inclined auxiliary locking grooves in the frame plate the locking bar will be engaged with the same by the stress of the spring and thereby hold the sash in this position if it is desired to have the same in a partially open position. If, however, it is desired to open the sash fully the latter is turned further in the same direction, so that the locking bars are disengaged from the inclined locking grooves and then engaged with the horizontal locking grooves of the frame plate. Upon applying suflieient pressure. to the sash for reversing its rotation the same may be again turned into its partially opened position or in its fully closed position, it being understood that the looking arms upon engaging the inclined or horizontal locking grooves will retain the sash in either of these positions and that the locking arms are automatically withdrawn from the inclined grooves and the horizontal grooves by the cooperating wedging engagement of the inclined surfaces of the inclined and horizontal grooves and the locking arms. When the sash is in its intermediate or partially open position the locking arms engage with the bottoms of the inclined grooves and they also engage similarly with the bottom of the horizontal grooves when the sash is in its fully open position, thereby enabling the locking bar to exert its full efiect for holding the sash in its partially open or fully open position, itbeing unnecessaryat'thistime to provide for a tight joint between the conical bore of the hub and the conical face of the boss inasmuch as leakage at this time is of no consequence.

By providing the locking bar with .a hub having a conical bore which engages with the conical boss of the frame plate a considerable part of the weight of the sash is supported by the boss, thereby relieving the pivot or coupling bolt of some of the weight of the sash and not only permitting the sash to be turned more easily but also preventing undue wear of this bolt, so that the same is retained in an operative or perfect working condition for a greater length of time.

For windows having very large and heavy sashes the construction of pivot-fixture or sash center shown in Figs. 12-16 is preferably used. In this modified construction the frame plate 3 is provided on its outer face with a boss 6 having a cylindrical periphery which engages with a cylindrical pivot socket 22 in the hub 2.11 of the locking dog or bar, thereby forming a square bearing for the dog on the frame plate whereby the entire weight of the sash is supported on the boss 6 and the bolt 25 which pivotally connects the sash and frame plates and dog is entirely relieved of the weight of the sash and therefore permitted to work free and easy. This bolt passes centrally through the boss and socket and bears with its head 26 against the rear side of the frame plate while its threaded end is arranged in a pocket 27 formed on the rear side of the dog. The latter is pressed yieldingly with its locking arms 23 against the frame plate and into the locking grooves thereof by means of a spring 29 surrounding the threaded end of the coupling bolt within the pocket 27 and bearing at one end against the bottom of the pocket and at its opposite end against a screw nut 28 on the bolt. For the purpose of preventing complete separation of the frame and sash plates when the same are not attached to the parts intended to receive the same the locking bar is provided above and below its socket and pocket with two perforated retaining lugs or ears 30 which project inwardly through a slot 18 in the sash plate and retaining keys or pins 18 extending transversely through said lugs and past the inner side of the sash plate, as shown in Figs. 12 and 13.

In its general organization my improved sash center is superior to those heretofore in use on a count of the simplicity of construction of its various parts which can be produced at comparatively low cost and also installed very readily. Furthermore, when this fixture is applied to a sash and frame all the exposed parts are flush with the inner and outer sides of these window members, so that a neat and finished ap pearance is presented.

I claim as my invention:

1. A sash center comprising two plates adapted to be attached to a sash and a frame, respectively, one of said plates having a boss, and a locking bar arranged lengthwise of the sash and extending the full length of said plates mounted to turn with the other plate but capable of moving toward and from the plate having the boss and provided with a socket which receives said boss.

2. A sash center comprising two plates adapted to be attached to a sash and a frame, respectively, one of said plates having a boss, and a locking bar arranged lengthwise of the sash and extending the full length of said plates mounted to turn with the other plate but capable of moving toward and from the plate having the boss and provided with a socket which receives said boss and means for pressing said bar yieldingly toward the plate having the boss.

3. A sash center comprising two plates adapted to be attached to a sash and a frame, respectively, one of said plates having a conical boss, a locking bar having a conical bore engaging with said boss, and means for yieldingly holding said locking bar in engagement with said plate having the boss.

4. A sash center comprising two plates adapted to be attached to a sash and aframe, respectively, one of said plates having a conical boss and a plurality of look ing grooves arranged around said boss, a locking bar having a hub provided with a conical bore engaging with said boss, and an arm projecting laterally from said hub and engaging with said grooves, said bar being mounted on the other attaching plate to turn therewith but movable independently thereof toward and from the plate having the boss and grooves, and means for yieldingly holding said bar in engagement with said boss and grooves.

5. A sash center comprising two plates the other plate having a coupling groove provided with an enlarged central part and reduced side parts extending laterally from said central part, a locking bar having an enlarged hub arrangedin said enlarged part of the coupling groove and provided with a conical bore engaging with said conical boss and reduced locking arms arranged in the reduced parts of said coupling groove and engaging with said locking grooves, and means for pressing said locking bar toward said plate having the boss and locking grooves.

'7. A sash center comprising two plates adapted to be attached to a sash and a frame, respectively, one of said plates having a conical boss and a plurality of locking grooves arranged around said boss and the other plate having a coupling groove provided with an enlarged central part and reduced side parts extending laterally from said central part, a locking bar having an enlarged hub arranged in said enlarged part of the coupling groove and provided with a conical bore engaging with said conical boss and reduced locking arms arranged in the reduced parts of said coupling groove and engaging with said locking grooves, and means for pressing said locking bar toward said plat having the boss and locking grooves, comprising a pivot bolt arranged in said boss and hub and provided with a head bearing against the back of said boss and a nut arranged in rear of said lockin bar, and a spring interposed between the back of said locking bar and said screw nut.

8. A sash center comprising two plates adapted to be attached to a sash and a frame, respectively, one of said plates having a conical boss, and a plurality of locking grooves arranged around said boss, and the other plate having a coupling groove provided with an enlarged central part and reduced side parts extending laterally from said central parts, and guide notches extending rearwardly from said central part, a locking bar having an enlarged central part arranged in the enlarged central part of said coupling groove, reduced locking arms arranged in said reduced parts of said cou-. pling groove and engaging with said locking notches and guide lugs projecting rearwardly from said hub into said guide notches, and means for pressing said locking bar toward the plate having said boss and locking grooves.

9. A sash center comprising two plates adapted to be attached to a sash and a frame, respectively, one of said plates having a conical boss and a plurality of locking grooves arranged around said boss, a locking bar having a hub provided with a conical bore engaging with said boss, an arm arranged on said hub and engaging with said grooves said bar being mounted on the other attaching plate to turn therewith but movable independently thereof toward and from the plate having the boss and grooves, and means for yieldingly holding said bar in engagement with said boss and grooves, those locking grooves which receive the locking bar in the closed position of the sash being sufficiently deep to prevent the bottom of the same from being engaged by the face of the locking bar while its hub bears against said boss and the other looking grooves being of less depth to permit the bottom of the same to be engaged by the locking bar in the open position of the sash.

Witness my hand this 25th day of November, 1914.

CLINTON D. TABOR. WVitnesses:

W. LESLIE CoNNnR, LENA MEYER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

